1660615055601 has 16 divisors (see below), whose sum is σ = 2231494284096. Its totient is φ = 1098429175296.

The previous prime is 1660615055597. The next prime is 1660615055629. The reversal of 1660615055601 is 1065505160661.

It is not a de Polignac number, because 1660615055601 - 2² = 1660615055597 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1660615059601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2573380 + ... + 3153333.

It is an arithmetic number, because the mean of its divisors is an integer number (139468392756).

Almost surely, 2^{1660615055601} is an apocalyptic number.

It is an amenable number.

1660615055601 is a deficient number, since it is larger than the sum of its proper divisors (570879228495).

1660615055601 is a wasteful number, since it uses less digits than its factorization.

1660615055601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5727472.

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 1660615055601 in words is "one trillion, six hundred sixty billion, six hundred fifteen million, fifty-five thousand, six hundred one".