87722190394 has 16 divisors (see below), whose sum is σ = 137332621440. Its totient is φ = 41945436720.

The previous prime is 87722190389. The next prime is 87722190427. The reversal of 87722190394 is 49309122778.

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, 31579 + ... + 420049.

It is an arithmetic number, because the mean of its divisors is an integer number (8583288840).

Almost surely, 2^87722190394 is an apocalyptic number.

87722190394 is a deficient number, since it is larger than the sum of its proper divisors (49610431046).

87722190394 is a wasteful number, since it uses less digits than its factorization.

87722190394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393405.

The product of its (nonzero) digits is 1524096, while the sum is 52.

The spelling of 87722190394 in words is "eighty-seven billion, seven hundred twenty-two million, one hundred ninety thousand, three hundred ninety-four".