1545157664644 has 96 divisors (see below), whose sum is σ = 3262791684096. Its totient is φ = 631586081280.

The previous prime is 1545157664599. The next prime is 1545157664657. The reversal of 1545157664644 is 4464667515451.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

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, 15554517 + ... + 15653539.

It is an arithmetic number, because the mean of its divisors is an integer number (33987413376).

Almost surely, 2^{1545157664644} is an apocalyptic number.

It is an amenable number.

1545157664644 is an abundant number, since it is smaller than the sum of its proper divisors (1717634019452).

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

1545157664644 is a wasteful number, since it uses less digits than its factorization.

1545157664644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99985 (or 99983 counting only the distinct ones).

The product of its digits is 48384000, while the sum is 58.

The spelling of 1545157664644 in words is "one trillion, five hundred forty-five billion, one hundred fifty-seven million, six hundred sixty-four thousand, six hundred forty-four".