65261613000 has 64 divisors (see below), whose sum is σ = 203616241920. Its totient is φ = 17403096000.

The previous prime is 65261612989. The next prime is 65261613029. The reversal of 65261613000 is 31616256.

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

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, 10873936 + ... + 10879935.

It is an arithmetic number, because the mean of its divisors is an integer number (3181503780).

Almost surely, 2^65261613000 is an apocalyptic number.

65261613000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65261613000 is an abundant number, since it is smaller than the sum of its proper divisors (138354628920).

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

65261613000 is a wasteful number, since it uses less digits than its factorization.

65261613000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21753895 (or 21753881 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The spelling of 65261613000 in words is "sixty-five billion, two hundred sixty-one million, six hundred thirteen thousand".