1556020667960 has 64 divisors (see below), whose sum is σ = 3985381025280. Its totient is φ = 541224576640.

The previous prime is 1556020667947. The next prime is 1556020668017. The reversal of 1556020667960 is 697660206551.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76868372 + ... + 76888611.

It is an arithmetic number, because the mean of its divisors is an integer number (62271578520).

Almost surely, 2^{1556020667960} is an apocalyptic number.

1556020667960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1556020667960 is an abundant number, since it is smaller than the sum of its proper divisors (2429360357320).

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

1556020667960 is a wasteful number, since it uses less digits than its factorization.

1556020667960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153757028 (or 153757024 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 53.

The spelling of 1556020667960 in words is "one trillion, five hundred fifty-six billion, twenty million, six hundred sixty-seven thousand, nine hundred sixty".