61451848677 has 16 divisors (see below), whose sum is σ = 82990752768. Its totient is φ = 40441229040.

The previous prime is 61451848649. The next prime is 61451848687. The reversal of 61451848677 is 77684815416.

It is a de Polignac number, because none of the positive numbers 2^k-61451848677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61451848687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206278 + ... + 406760.

It is an arithmetic number, because the mean of its divisors is an integer number (5186922048).

Almost surely, 2^61451848677 is an apocalyptic number.

It is an amenable number.

61451848677 is a deficient number, since it is larger than the sum of its proper divisors (21538904091).

61451848677 is a wasteful number, since it uses less digits than its factorization.

61451848677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201800.

The product of its digits is 9031680, while the sum is 57.

The spelling of 61451848677 in words is "sixty-one billion, four hundred fifty-one million, eight hundred forty-eight thousand, six hundred seventy-seven".