155926954961 has 2 divisors, whose sum is σ = 155926954962. Its totient is φ = 155926954960.

The previous prime is 155926954951. The next prime is 155926955003. The reversal of 155926954961 is 169459629551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137299891600 + 18627063361 = 370540^2 + 136481^2 .

It is a cyclic number.

It is not a de Polignac number, because 155926954961 - 2²² = 155922760657 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155926954894 and 155926954903.

It is not a weakly prime, because it can be changed into another prime (155926954951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77963477480 + 77963477481.

It is an arithmetic number, because the mean of its divisors is an integer number (77963477481).

Almost surely, 2^155926954961 is an apocalyptic number.

It is an amenable number.

155926954961 is a deficient number, since it is larger than the sum of its proper divisors (1).

155926954961 is an equidigital number, since it uses as much as digits as its factorization.

155926954961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26244000, while the sum is 62.

The spelling of 155926954961 in words is "one hundred fifty-five billion, nine hundred twenty-six million, nine hundred fifty-four thousand, nine hundred sixty-one".