2661361230500 has 72 divisors (see below), whose sum is σ = 6761378365560. Its totient is φ = 912466699200.

The previous prime is 2661361230499. The next prime is 2661361230529. The reversal of 2661361230500 is 50321631662.

It can be written as a sum of positive squares in 4 ways, for example, as 86543049124 + 2574818181376 = 294182^2 + 1604624^2 .

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54288995 + ... + 54337994.

It is an arithmetic number, because the mean of its divisors is an integer number (93908032855).

Almost surely, 2^{2661361230500} is an apocalyptic number.

2661361230500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2661361230500 is an abundant number, since it is smaller than the sum of its proper divisors (4100017135060).

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

2661361230500 is a wasteful number, since it uses less digits than its factorization.

2661361230500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108627022 (or 108627003 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 35.

The spelling of 2661361230500 in words is "two trillion, six hundred sixty-one billion, three hundred sixty-one million, two hundred thirty thousand, five hundred".