1620935848554 has 64 divisors (see below), whose sum is σ = 3797363192832. Its totient is φ = 455787718400.

The previous prime is 1620935848531. The next prime is 1620935848579. The reversal of 1620935848554 is 4558485390261.

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, 10094172 + ... + 10253495.

It is an arithmetic number, because the mean of its divisors is an integer number (59333799888).

Almost surely, 2^{1620935848554} is an apocalyptic number.

1620935848554 is an abundant number, since it is smaller than the sum of its proper divisors (2176427344278).

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

1620935848554 is a wasteful number, since it uses less digits than its factorization.

1620935848554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20347771.

The product of its (nonzero) digits is 41472000, while the sum is 60.

The spelling of 1620935848554 in words is "one trillion, six hundred twenty billion, nine hundred thirty-five million, eight hundred forty-eight thousand, five hundred fifty-four".