2051321578410 has 64 divisors (see below), whose sum is σ = 5306437277568. Its totient is φ = 504506413824.

The previous prime is 2051321578403. The next prime is 2051321578421. The reversal of 2051321578410 is 148751231502.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1807737 + ... + 2714876.

It is an arithmetic number, because the mean of its divisors is an integer number (82913082462).

Almost surely, 2^{2051321578410} is an apocalyptic number.

2051321578410 is an abundant number, since it is smaller than the sum of its proper divisors (3255115699158).

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

2051321578410 is a wasteful number, since it uses less digits than its factorization.

2051321578410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4523799.

The product of its (nonzero) digits is 67200, while the sum is 39.

The spelling of 2051321578410 in words is "two trillion, fifty-one billion, three hundred twenty-one million, five hundred seventy-eight thousand, four hundred ten".