61115076021 has 8 divisors (see below), whose sum is σ = 81488793760. Its totient is φ = 40742371152.

The previous prime is 61115075999. The next prime is 61115076067. The reversal of 61115076021 is 12067051116.

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

It is not a de Polignac number, because 61115076021 - 2¹⁰ = 61115074997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61115076021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61115076091) 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, 99010 + ... + 363363.

It is an arithmetic number, because the mean of its divisors is an integer number (10186099220).

Almost surely, 2^61115076021 is an apocalyptic number.

It is an amenable number.

61115076021 is a deficient number, since it is larger than the sum of its proper divisors (20373717739).

61115076021 is a wasteful number, since it uses less digits than its factorization.

61115076021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506435.

The product of its (nonzero) digits is 2520, while the sum is 30.

The spelling of 61115076021 in words is "sixty-one billion, one hundred fifteen million, seventy-six thousand, twenty-one".