36778797031 has 2 divisors, whose sum is σ = 36778797032. Its totient is φ = 36778797030.

The previous prime is 36778797007. The next prime is 36778797073. The reversal of 36778797031 is 13079787763.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36778797031 is a prime.

It is a super-2 number, since 2×36778797031² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36778797931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18389398515 + 18389398516.

It is an arithmetic number, because the mean of its divisors is an integer number (18389398516).

Almost surely, 2^36778797031 is an apocalyptic number.

36778797031 is a deficient number, since it is larger than the sum of its proper divisors (1).

36778797031 is an equidigital number, since it uses as much as digits as its factorization.

36778797031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9335088, while the sum is 58.

The spelling of 36778797031 in words is "thirty-six billion, seven hundred seventy-eight million, seven hundred ninety-seven thousand, thirty-one".