262123130640 has 160 divisors (see below), whose sum is σ = 928835122176. Its totient is φ = 59902871040.

The previous prime is 262123130639. The next prime is 262123130657. The reversal of 262123130640 is 46031321262.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 262123130598 and 262123130607.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 12305439 + ... + 12326721.

Almost surely, 2^262123130640 is an apocalyptic number.

262123130640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

262123130640 is an abundant number, since it is smaller than the sum of its proper divisors (666711991536).

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

262123130640 is a wasteful number, since it uses less digits than its factorization.

262123130640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28637 (or 28631 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The spelling of 262123130640 in words is "two hundred sixty-two billion, one hundred twenty-three million, one hundred thirty thousand, six hundred forty".