1556432247102 has 64 divisors (see below), whose sum is σ = 3268352747520. Its totient is φ = 493472908800.

The previous prime is 1556432247047. The next prime is 1556432247109. The reversal of 1556432247102 is 2017422346551.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1556432247109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81560202 + ... + 81579282.

It is an arithmetic number, because the mean of its divisors is an integer number (51068011680).

Almost surely, 2^{1556432247102} is an apocalyptic number.

1556432247102 is an abundant number, since it is smaller than the sum of its proper divisors (1711920500418).

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

1556432247102 is a wasteful number, since it uses less digits than its factorization.

1556432247102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26609.

The product of its (nonzero) digits is 403200, while the sum is 42.

The spelling of 1556432247102 in words is "one trillion, five hundred fifty-six billion, four hundred thirty-two million, two hundred forty-seven thousand, one hundred two".