61861658075377 has 8 divisors (see below), whose sum is σ = 61909656894176. Its totient is φ = 61813676973312.

The previous prime is 61861658075291. The next prime is 61861658075383. The reversal of 61861658075377 is 77357085616816.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61861658075377 - 2⁷ = 61861658075249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61861658073377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2561218 + ... + 11414164.

It is an arithmetic number, because the mean of its divisors is an integer number (7738707111772).

Almost surely, 2^{61861658075377} is an apocalyptic number.

It is an amenable number.

61861658075377 is a deficient number, since it is larger than the sum of its proper divisors (47998818799).

61861658075377 is a wasteful number, since it uses less digits than its factorization.

61861658075377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8858367.

The product of its (nonzero) digits is 355622400, while the sum is 70.

The spelling of 61861658075377 in words is "sixty-one trillion, eight hundred sixty-one billion, six hundred fifty-eight million, seventy-five thousand, three hundred seventy-seven".