139877763505 has 16 divisors (see below), whose sum is σ = 171038808144. Its totient is φ = 109779005440.

The previous prime is 139877763499. The next prime is 139877763521. The reversal of 139877763505 is 505367778931.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 18085139361 + 121792624144 = 134481^2 + 348988^2 .

It is not a de Polignac number, because 139877763505 - 2¹³ = 139877755313 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3066465 + ... + 3111745.

It is an arithmetic number, because the mean of its divisors is an integer number (10689925509).

Almost surely, 2^139877763505 is an apocalyptic number.

It is an amenable number.

139877763505 is a deficient number, since it is larger than the sum of its proper divisors (31161044639).

139877763505 is a wasteful number, since it uses less digits than its factorization.

139877763505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56996.

The product of its (nonzero) digits is 33339600, while the sum is 61.

The spelling of 139877763505 in words is "one hundred thirty-nine billion, eight hundred seventy-seven million, seven hundred sixty-three thousand, five hundred five".