61877019791151 has 6 divisors (see below), whose sum is σ = 89377917476120. Its totient is φ = 41251346527428.

The previous prime is 61877019791131. The next prime is 61877019791161. The reversal of 61877019791151 is 15119791077816.

61877019791151 is a `hidden beast` number, since 618 + 7 + 7 + 0 + 1 + 9 + 7 + 9 + 1 + 1 + 5 + 1 = 666.

It is not a de Polignac number, because 61877019791151 - 2¹⁴ = 61877019774767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61877019791131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3437612210611 + ... + 3437612210628.

Almost surely, 2^{61877019791151} is an apocalyptic number.

61877019791151 is a deficient number, since it is larger than the sum of its proper divisors (27500897684969).

61877019791151 is a wasteful number, since it uses less digits than its factorization.

61877019791151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6875224421245 (or 6875224421242 counting only the distinct ones).

The product of its (nonzero) digits is 6667920, while the sum is 63.

The spelling of 61877019791151 in words is "sixty-one trillion, eight hundred seventy-seven billion, nineteen million, seven hundred ninety-one thousand, one hundred fifty-one".