235413772921 has 2 divisors, whose sum is σ = 235413772922. Its totient is φ = 235413772920.

The previous prime is 235413772901. The next prime is 235413772943. The reversal of 235413772921 is 129277314532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194097519225 + 41316253696 = 440565^2 + 203264^2 .

It is a cyclic number.

It is not a de Polignac number, because 235413772921 - 2⁷ = 235413772793 is a prime.

It is not a weakly prime, because it can be changed into another prime (235413772901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117706886460 + 117706886461.

It is an arithmetic number, because the mean of its divisors is an integer number (117706886461).

Almost surely, 2^235413772921 is an apocalyptic number.

It is an amenable number.

235413772921 is a deficient number, since it is larger than the sum of its proper divisors (1).

235413772921 is an equidigital number, since it uses as much as digits as its factorization.

235413772921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 46.

The spelling of 235413772921 in words is "two hundred thirty-five billion, four hundred thirteen million, seven hundred seventy-two thousand, nine hundred twenty-one".