3072399581557 has 4 divisors (see below), whose sum is σ = 3106920925260. Its totient is φ = 3037878237856.

The previous prime is 3072399581539. The next prime is 3072399581579. The reversal of 3072399581557 is 7551859932703.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 259698275236 + 2812701306321 = 509606^2 + 1677111^2 .

It is a cyclic number.

It is not a de Polignac number, because 3072399581557 - 2¹⁵ = 3072399548789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3072399581507) 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, 17260671718 + ... + 17260671895.

It is an arithmetic number, because the mean of its divisors is an integer number (776730231315).

Almost surely, 2^{3072399581557} is an apocalyptic number.

It is an amenable number.

3072399581557 is a deficient number, since it is larger than the sum of its proper divisors (34521343703).

3072399581557 is an equidigital number, since it uses as much as digits as its factorization.

3072399581557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34521343702.

The product of its (nonzero) digits is 71442000, while the sum is 64.

The spelling of 3072399581557 in words is "three trillion, seventy-two billion, three hundred ninety-nine million, five hundred eighty-one thousand, five hundred fifty-seven".