61946562477 has 8 divisors (see below), whose sum is σ = 82630558080. Its totient is φ = 41280137600.

The previous prime is 61946562473. The next prime is 61946562499. The reversal of 61946562477 is 77426564916.

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 61946562477 - 2² = 61946562473 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61946562473) 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, 4384452 + ... + 4398557.

It is an arithmetic number, because the mean of its divisors is an integer number (10328819760).

Almost surely, 2^61946562477 is an apocalyptic number.

It is an amenable number.

61946562477 is a deficient number, since it is larger than the sum of its proper divisors (20683995603).

61946562477 is a wasteful number, since it uses less digits than its factorization.

61946562477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8785363.

The product of its digits is 15240960, while the sum is 57.

The spelling of 61946562477 in words is "sixty-one billion, nine hundred forty-six million, five hundred sixty-two thousand, four hundred seventy-seven".