15942470040 has 96 divisors (see below), whose sum is σ = 59214898080. Its totient is φ = 3643992576.

The previous prime is 15942470039. The next prime is 15942470041. The reversal of 15942470040 is 4007424951.

It is a happy number.

15942470040 is a `hidden beast` number, since 1 + 594 + 24 + 7 + 0 + 0 + 40 = 666.

It is an interprime number because it is at equal distance from previous prime (15942470039) and next prime (15942470041).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 15942469977 and 15942470004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15942470041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3160669 + ... + 3165708.

It is an arithmetic number, because the mean of its divisors is an integer number (616821855).

Almost surely, 2^15942470040 is an apocalyptic number.

15942470040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15942470040 is an abundant number, since it is smaller than the sum of its proper divisors (43272428040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15942470040 is a wasteful number, since it uses less digits than its factorization.

15942470040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6326401 (or 6326394 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

Adding to 15942470040 its reverse (4007424951), we get a palindrome (19949894991).

The spelling of 15942470040 in words is "fifteen billion, nine hundred forty-two million, four hundred seventy thousand, forty".