123077961953 has 4 divisors (see below), whose sum is σ = 123079915440. Its totient is φ = 123076008468.

The previous prime is 123077961931. The next prime is 123077962001. The reversal of 123077961953 is 359169770321.

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, and also an emirpimes, since its reverse is a distinct semiprime: 359169770321 = 22573 ⋅15911477.

It is a cyclic number.

It is not a de Polignac number, because 123077961953 - 2¹⁴ = 123077945569 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123077961895 and 123077961904.

It is not an unprimeable number, because it can be changed into a prime (123077961053) 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, 878975 + ... + 1009332.

It is an arithmetic number, because the mean of its divisors is an integer number (30769978860).

Almost surely, 2^123077961953 is an apocalyptic number.

It is an amenable number.

123077961953 is a deficient number, since it is larger than the sum of its proper divisors (1953487).

123077961953 is an equidigital number, since it uses as much as digits as its factorization.

123077961953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1953486.

The product of its (nonzero) digits is 2143260, while the sum is 53.

The spelling of 123077961953 in words is "one hundred twenty-three billion, seventy-seven million, nine hundred sixty-one thousand, nine hundred fifty-three".