2561036446700 has 36 divisors (see below), whose sum is σ = 5566916762232. Its totient is φ = 1022669385600.

The previous prime is 2561036446691. The next prime is 2561036446781. The reversal of 2561036446700 is 76446301652.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21755921 + ... + 21873320.

Almost surely, 2^{2561036446700} is an apocalyptic number.

2561036446700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2561036446700 is an abundant number, since it is smaller than the sum of its proper divisors (3005880315532).

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

2561036446700 is a wasteful number, since it uses less digits than its factorization.

2561036446700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43629842 (or 43629835 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 44.

The spelling of 2561036446700 in words is "two trillion, five hundred sixty-one billion, thirty-six million, four hundred forty-six thousand, seven hundred".