61552524977 has 16 divisors (see below), whose sum is σ = 64902684672. Its totient is φ = 58310542080.

The previous prime is 61552524959. The next prime is 61552524983. The reversal of 61552524977 is 77942525516.

It is a cyclic number.

It is not a de Polignac number, because 61552524977 - 2¹² = 61552520881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61552521977) 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, 118973 + ... + 370485.

It is an arithmetic number, because the mean of its divisors is an integer number (4056417792).

Almost surely, 2^61552524977 is an apocalyptic number.

It is an amenable number.

61552524977 is a deficient number, since it is larger than the sum of its proper divisors (3350159695).

61552524977 is a wasteful number, since it uses less digits than its factorization.

61552524977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251728.

The product of its digits is 5292000, while the sum is 53.

The spelling of 61552524977 in words is "sixty-one billion, five hundred fifty-two million, five hundred twenty-four thousand, nine hundred seventy-seven".