101987842562 has 4 divisors (see below), whose sum is σ = 152981763846. Its totient is φ = 50993921280.

The previous prime is 101987842531. The next prime is 101987842589. The reversal of 101987842562 is 265248789101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 96403419121 + 5584423441 = 310489^2 + 74729^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25496960639 + ... + 25496960642.

Almost surely, 2^101987842562 is an apocalyptic number.

101987842562 is a deficient number, since it is larger than the sum of its proper divisors (50993921284).

101987842562 is an equidigital number, since it uses as much as digits as its factorization.

101987842562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50993921283.

The product of its (nonzero) digits is 1935360, while the sum is 53.

The spelling of 101987842562 in words is "one hundred one billion, nine hundred eighty-seven million, eight hundred forty-two thousand, five hundred sixty-two".