151691809946 has 16 divisors (see below), whose sum is σ = 232474492800. Its totient is φ = 74201639520.

The previous prime is 151691809933. The next prime is 151691809991. The reversal of 151691809946 is 649908196151.

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, 101096 + ... + 560003.

It is an arithmetic number, because the mean of its divisors is an integer number (14529655800).

Almost surely, 2^151691809946 is an apocalyptic number.

151691809946 is a deficient number, since it is larger than the sum of its proper divisors (80782682854).

151691809946 is a wasteful number, since it uses less digits than its factorization.

151691809946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663589.

The product of its (nonzero) digits is 4199040, while the sum is 59.

The spelling of 151691809946 in words is "one hundred fifty-one billion, six hundred ninety-one million, eight hundred nine thousand, nine hundred forty-six".