2001302541656 has 16 divisors (see below), whose sum is σ = 4093573380840. Its totient is φ = 909682973440.

The previous prime is 2001302541643. The next prime is 2001302541727. The reversal of 2001302541656 is 6561452031002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11371037081 + ... + 11371037256.

Almost surely, 2^{2001302541656} is an apocalyptic number.

It is an amenable number.

2001302541656 is an abundant number, since it is smaller than the sum of its proper divisors (2092270839184).

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

2001302541656 is a wasteful number, since it uses less digits than its factorization.

2001302541656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22742074354 (or 22742074350 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

Adding to 2001302541656 its reverse (6561452031002), we get a palindrome (8562754572658).

The spelling of 2001302541656 in words is "two trillion, one billion, three hundred two million, five hundred forty-one thousand, six hundred fifty-six".