61281563001 has 8 divisors (see below), whose sum is σ = 81736008000. Its totient is φ = 40840746672.

The previous prime is 61281562987. The next prime is 61281563017. The reversal of 61281563001 is 10036518216.

61281563001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61281563001 - 2⁷ = 61281562873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61281563401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3396670 + ... + 3414663.

It is an arithmetic number, because the mean of its divisors is an integer number (10217001000).

Almost surely, 2^61281563001 is an apocalyptic number.

It is an amenable number.

61281563001 is a deficient number, since it is larger than the sum of its proper divisors (20454444999).

61281563001 is a wasteful number, since it uses less digits than its factorization.

61281563001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6814335.

The product of its (nonzero) digits is 8640, while the sum is 33.

The spelling of 61281563001 in words is "sixty-one billion, two hundred eighty-one million, five hundred sixty-three thousand, one".