61763770157 has 2 divisors, whose sum is σ = 61763770158. Its totient is φ = 61763770156.

The previous prime is 61763770151. The next prime is 61763770169. The reversal of 61763770157 is 75107736716.

61763770157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34824784996 + 26938985161 = 186614^2 + 164131^2 .

It is a cyclic number.

It is not a de Polignac number, because 61763770157 - 2⁶ = 61763770093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61763770151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30881885078 + 30881885079.

It is an arithmetic number, because the mean of its divisors is an integer number (30881885079).

Almost surely, 2^61763770157 is an apocalyptic number.

It is an amenable number.

61763770157 is a deficient number, since it is larger than the sum of its proper divisors (1).

61763770157 is an equidigital number, since it uses as much as digits as its factorization.

61763770157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296540, while the sum is 50.

The spelling of 61763770157 in words is "sixty-one billion, seven hundred sixty-three million, seven hundred seventy thousand, one hundred fifty-seven".