265928495040 has 560 divisors, whose sum is σ = 1063043327808. Its totient is φ = 62611439616.

The previous prime is 265928494981. The next prime is 265928495057. The reversal of 265928495040 is 40594829562.

265928495040 is a `hidden beast` number, since 2 + 6 + 5 + 92 + 8 + 49 + 504 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 7732924 + ... + 7767236.

Almost surely, 2^265928495040 is an apocalyptic number.

265928495040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 265928495040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (531521663904).

265928495040 is an abundant number, since it is smaller than the sum of its proper divisors (797114832768).

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

265928495040 is a wasteful number, since it uses less digits than its factorization.

265928495040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34378 (or 34359 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 54.

The spelling of 265928495040 in words is "two hundred sixty-five billion, nine hundred twenty-eight million, four hundred ninety-five thousand, forty".