20150210040 has 64 divisors (see below), whose sum is σ = 61015628160. Its totient is φ = 5323167360.

The previous prime is 20150210033. The next prime is 20150210053. The reversal of 20150210040 is 4001205102.

It is a super-2 number, since 2×20150210040² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 771826 + ... + 797505.

It is an arithmetic number, because the mean of its divisors is an integer number (953369190).

Almost surely, 2^20150210040 is an apocalyptic number.

20150210040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20150210040 is an abundant number, since it is smaller than the sum of its proper divisors (40865418120).

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

20150210040 is a wasteful number, since it uses less digits than its factorization.

20150210040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1569452 (or 1569448 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

Adding to 20150210040 its reverse (4001205102), we get a palindrome (24151415142).

The spelling of 20150210040 in words is "twenty billion, one hundred fifty million, two hundred ten thousand, forty".