766461013957 has 2 divisors, whose sum is σ = 766461013958. Its totient is φ = 766461013956.

The previous prime is 766461013939. The next prime is 766461013961. The reversal of 766461013957 is 759310164667.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 612023017761 + 154437996196 = 782319^2 + 392986^2 .

It is a cyclic number.

It is not a de Polignac number, because 766461013957 - 2³⁹ = 216705200069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 766461013898 and 766461013907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (766461013987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383230506978 + 383230506979.

It is an arithmetic number, because the mean of its divisors is an integer number (383230506979).

Almost surely, 2^766461013957 is an apocalyptic number.

It is an amenable number.

766461013957 is a deficient number, since it is larger than the sum of its proper divisors (1).

766461013957 is an equidigital number, since it uses as much as digits as its factorization.

766461013957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5715360, while the sum is 55.

The spelling of 766461013957 in words is "seven hundred sixty-six billion, four hundred sixty-one million, thirteen thousand, nine hundred fifty-seven".