154497379881 has 32 divisors (see below), whose sum is σ = 228969861120. Its totient is φ = 92068789824.

The previous prime is 154497379871. The next prime is 154497379973. The reversal of 154497379881 is 188973794451.

It is not a de Polignac number, because 154497379881 - 2⁹ = 154497379369 is a prime.

It is a super-2 number, since 2×154497379881² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (154497379801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 346905 + ... + 655238.

It is an arithmetic number, because the mean of its divisors is an integer number (7155308160).

Almost surely, 2^154497379881 is an apocalyptic number.

It is an amenable number.

154497379881 is a deficient number, since it is larger than the sum of its proper divisors (74472481239).

154497379881 is a wasteful number, since it uses less digits than its factorization.

154497379881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002285.

The product of its digits is 60963840, while the sum is 66.

The spelling of 154497379881 in words is "one hundred fifty-four billion, four hundred ninety-seven million, three hundred seventy-nine thousand, eight hundred eighty-one".