154191761664 has 72 divisors (see below), whose sum is σ = 412892921952. Its totient is φ = 51081891840.

The previous prime is 154191761657. The next prime is 154191761677. The reversal of 154191761664 is 466167191451.

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, 490677 + ... + 741044.

It is an arithmetic number, because the mean of its divisors is an integer number (5734623916).

Almost surely, 2^154191761664 is an apocalyptic number.

It is an amenable number.

154191761664 is an abundant number, since it is smaller than the sum of its proper divisors (258701160288).

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

154191761664 is a wasteful number, since it uses less digits than its factorization.

154191761664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231903 (or 1231889 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 51.

The spelling of 154191761664 in words is "one hundred fifty-four billion, one hundred ninety-one million, seven hundred sixty-one thousand, six hundred sixty-four".