61572216201 has 16 divisors (see below), whose sum is σ = 85179244800. Its totient is φ = 39515067648.

The previous prime is 61572216179. The next prime is 61572216227. The reversal of 61572216201 is 10261227516.

It is not a de Polignac number, because 61572216201 - 2⁶ = 61572216137 is a prime.

It is a super-2 number, since 2×61572216201² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61572216281) 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, 1020721 + ... + 1079358.

It is an arithmetic number, because the mean of its divisors is an integer number (5323702800).

Almost surely, 2^61572216201 is an apocalyptic number.

It is an amenable number.

61572216201 is a deficient number, since it is larger than the sum of its proper divisors (23607028599).

61572216201 is a wasteful number, since it uses less digits than its factorization.

61572216201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100448.

The product of its (nonzero) digits is 10080, while the sum is 33.

The spelling of 61572216201 in words is "sixty-one billion, five hundred seventy-two million, two hundred sixteen thousand, two hundred one".