61216748901 has 48 divisors (see below), whose sum is σ = 111795959808. Its totient is φ = 31352983200.

The previous prime is 61216748891. The next prime is 61216748903. The reversal of 61216748901 is 10984761216.

61216748901 is a `hidden beast` number, since 6 + 1 + 2 + 167 + 489 + 0 + 1 = 666.

61216748901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61216748901 - 2⁷ = 61216748773 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61216748903) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 572881 + ... + 671286.

It is an arithmetic number, because the mean of its divisors is an integer number (2329082496).

Almost surely, 2^61216748901 is an apocalyptic number.

It is an amenable number.

61216748901 is a deficient number, since it is larger than the sum of its proper divisors (50579210907).

61216748901 is a wasteful number, since it uses less digits than its factorization.

61216748901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244262 (or 1244259 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 61216748901 in words is "sixty-one billion, two hundred sixteen million, seven hundred forty-eight thousand, nine hundred one".