139972104557 has 2 divisors, whose sum is σ = 139972104558. Its totient is φ = 139972104556.

The previous prime is 139972104431. The next prime is 139972104599. The reversal of 139972104557 is 755401279931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99439946281 + 40532158276 = 315341^2 + 201326^2 .

It is a cyclic number.

It is not a de Polignac number, because 139972104557 - 2¹⁴ = 139972088173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 139972104499 and 139972104508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139972106557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69986052278 + 69986052279.

It is an arithmetic number, because the mean of its divisors is an integer number (69986052279).

Almost surely, 2^139972104557 is an apocalyptic number.

It is an amenable number.

139972104557 is a deficient number, since it is larger than the sum of its proper divisors (1).

139972104557 is an equidigital number, since it uses as much as digits as its factorization.

139972104557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2381400, while the sum is 53.

The spelling of 139972104557 in words is "one hundred thirty-nine billion, nine hundred seventy-two million, one hundred four thousand, five hundred fifty-seven".