148644240657 has 16 divisors (see below), whose sum is σ = 216432518400. Its totient is φ = 89994621200.

The previous prime is 148644240629. The next prime is 148644240673. The reversal of 148644240657 is 756042446841.

It is not a de Polignac number, because 148644240657 - 2¹⁴ = 148644224273 is a prime.

It is a super-2 number, since 2×148644240657² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (148644240607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2287407 + ... + 2351492.

It is an arithmetic number, because the mean of its divisors is an integer number (13527032400).

Almost surely, 2^148644240657 is an apocalyptic number.

It is an amenable number.

148644240657 is a deficient number, since it is larger than the sum of its proper divisors (67788277743).

148644240657 is a wasteful number, since it uses less digits than its factorization.

148644240657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4639884.

The product of its (nonzero) digits is 5160960, while the sum is 51.

The spelling of 148644240657 in words is "one hundred forty-eight billion, six hundred forty-four million, two hundred forty thousand, six hundred fifty-seven".