373640458561 has 4 divisors (see below), whose sum is σ = 375203808000. Its totient is φ = 372077109124.

The previous prime is 373640458553. The next prime is 373640458637. The reversal of 373640458561 is 165854046373.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 373640458561 - 2³ = 373640458553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 373640458499 and 373640458508.

It is not an unprimeable number, because it can be changed into a prime (373640458361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 781674361 + ... + 781674838.

It is an arithmetic number, because the mean of its divisors is an integer number (93800952000).

Almost surely, 2^373640458561 is an apocalyptic number.

It is an amenable number.

373640458561 is a deficient number, since it is larger than the sum of its proper divisors (1563349439).

373640458561 is a wasteful number, since it uses less digits than its factorization.

373640458561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1563349438.

The product of its (nonzero) digits is 7257600, while the sum is 52.

The spelling of 373640458561 in words is "three hundred seventy-three billion, six hundred forty million, four hundred fifty-eight thousand, five hundred sixty-one".