123780504956762 has 4 divisors (see below), whose sum is σ = 185670757435146. Its totient is φ = 61890252478380.

The previous prime is 123780504956659. The next prime is 123780504956791. The reversal of 123780504956762 is 267659405087321.

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

It can be written as a sum of positive squares in only one way, i.e., 77800320561601 + 45980184395161 = 8820449^2 + 6780869^2 .

It is a super-2 number, since 2×123780504956762² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30945126239189 + ... + 30945126239192.

It is a 1-persistent number, because it is pandigital, but 2⋅123780504956762 = 247561009913524 is not.

Almost surely, 2^{123780504956762} is an apocalyptic number.

123780504956762 is a deficient number, since it is larger than the sum of its proper divisors (61890252478384).

123780504956762 is an equidigital number, since it uses as much as digits as its factorization.

123780504956762 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61890252478383.

The product of its (nonzero) digits is 152409600, while the sum is 65.

The spelling of 123780504956762 in words is "one hundred twenty-three trillion, seven hundred eighty billion, five hundred four million, nine hundred fifty-six thousand, seven hundred sixty-two".