61522620051 has 16 divisors (see below), whose sum is σ = 82671304320. Its totient is φ = 40694621760.

The previous prime is 61522620043. The next prime is 61522620083. The reversal of 61522620051 is 15002622516.

It is not a de Polignac number, because 61522620051 - 2³ = 61522620043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61522620031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2946135 + ... + 2966943.

It is an arithmetic number, because the mean of its divisors is an integer number (5166956520).

Almost surely, 2^61522620051 is an apocalyptic number.

61522620051 is a deficient number, since it is larger than the sum of its proper divisors (21148684269).

61522620051 is a wasteful number, since it uses less digits than its factorization.

61522620051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28466.

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 61522620051 in words is "sixty-one billion, five hundred twenty-two million, six hundred twenty thousand, fifty-one".