17979461040 has 80 divisors (see below), whose sum is σ = 57095783136. Its totient is φ = 4677580800.

The previous prime is 17979461039. The next prime is 17979461041. The reversal of 17979461040 is 4016497971.

It is an interprime number because it is at equal distance from previous prime (17979461039) and next prime (17979461041).

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×17979461040² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (17979461041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 903751 + ... + 923430.

Almost surely, 2^17979461040 is an apocalyptic number.

17979461040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

17979461040 is an abundant number, since it is smaller than the sum of its proper divisors (39116322096).

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

17979461040 is a wasteful number, since it uses less digits than its factorization.

17979461040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827238 (or 1827232 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 48.

The spelling of 17979461040 in words is "seventeen billion, nine hundred seventy-nine million, four hundred sixty-one thousand, forty".