61455672001 has 4 divisors (see below), whose sum is σ = 61632778032. Its totient is φ = 61278565972.

The previous prime is 61455671971. The next prime is 61455672049. The reversal of 61455672001 is 10027655416.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61455672001 - 2⁹ = 61455671489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61455672701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88552495 + ... + 88553188.

It is an arithmetic number, because the mean of its divisors is an integer number (15408194508).

Almost surely, 2^61455672001 is an apocalyptic number.

It is an amenable number.

61455672001 is a deficient number, since it is larger than the sum of its proper divisors (177106031).

61455672001 is a wasteful number, since it uses less digits than its factorization.

61455672001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177106030.

The product of its (nonzero) digits is 50400, while the sum is 37.

The spelling of 61455672001 in words is "sixty-one billion, four hundred fifty-five million, six hundred seventy-two thousand, one".