61421132552045 has 64 divisors (see below), whose sum is σ = 84684128126976. Its totient is φ = 41893379850240.

The previous prime is 61421132552033. The next prime is 61421132552047. The reversal of 61421132552045 is 54025523112416.

It is a happy number.

It is not a de Polignac number, because 61421132552045 - 2¹⁶ = 61421132486509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61421132551993 and 61421132552011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61421132552047) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10706138417 + ... + 10706144153.

It is an arithmetic number, because the mean of its divisors is an integer number (1323189501984).

Almost surely, 2^{61421132552045} is an apocalyptic number.

It is an amenable number.

61421132552045 is a deficient number, since it is larger than the sum of its proper divisors (23262995574931).

61421132552045 is a wasteful number, since it uses less digits than its factorization.

61421132552045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8190.

The product of its (nonzero) digits is 288000, while the sum is 41.

The spelling of 61421132552045 in words is "sixty-one trillion, four hundred twenty-one billion, one hundred thirty-two million, five hundred fifty-two thousand, forty-five".