99571409974 has 16 divisors (see below), whose sum is σ = 156086730720. Its totient is φ = 47549050560.

The previous prime is 99571409929. The next prime is 99571410007. The reversal of 99571409974 is 47990417599.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1606959 + ... + 1667770.

It is an arithmetic number, because the mean of its divisors is an integer number (9755420670).

Almost surely, 2^99571409974 is an apocalyptic number.

99571409974 is a deficient number, since it is larger than the sum of its proper divisors (56515320746).

99571409974 is a wasteful number, since it uses less digits than its factorization.

99571409974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3275415.

The product of its (nonzero) digits is 25719120, while the sum is 64.

It can be divided in two parts, 99571 and 409974, that added together give a triangular number (509545 = T₁₀₀₉).

The spelling of 99571409974 in words is "ninety-nine billion, five hundred seventy-one million, four hundred nine thousand, nine hundred seventy-four".