65001100402560 has 384 divisors, whose sum is σ = 242777415227040. Its totient is φ = 14748943319040.

The previous prime is 65001100402547. The next prime is 65001100402597. The reversal of 65001100402560 is 6520400110056.

It is a tau number, because it is divible by the number of its divisors (384).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10367380 + ... + 15410540.

Almost surely, 2^{65001100402560} is an apocalyptic number.

65001100402560 is a gapful number since it is divisible by the number (60) 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 65001100402560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121388707613520).

65001100402560 is an abundant number, since it is smaller than the sum of its proper divisors (177776314824480).

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

65001100402560 is a wasteful number, since it uses less digits than its factorization.

65001100402560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5043334 (or 5043315 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 65001100402560 in words is "sixty-five trillion, one billion, one hundred million, four hundred two thousand, five hundred sixty".