76019156376721 has 4 divisors (see below), whose sum is σ = 76771821291444. Its totient is φ = 75266491462000.

The previous prime is 76019156376701. The next prime is 76019156376731. The reversal of 76019156376721 is 12767365191067.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 73214787486096 + 2804368890625 = 8556564^2 + 1674625^2 .

It is a cyclic number.

It is not a de Polignac number, because 76019156376721 - 2¹⁹ = 76019155852433 is a prime.

It is a super-2 number, since 2×76019156376721² (a number of 29 digits) contains 22 as substring.

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 76019156376721.

It is not an unprimeable number, because it can be changed into a prime (76019156376701) 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, 376332457210 + ... + 376332457411.

It is an arithmetic number, because the mean of its divisors is an integer number (19192955322861).

Almost surely, 2^{76019156376721} is an apocalyptic number.

It is an amenable number.

76019156376721 is a deficient number, since it is larger than the sum of its proper divisors (752664914723).

76019156376721 is a wasteful number, since it uses less digits than its factorization.

76019156376721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752664914722.

The product of its (nonzero) digits is 20003760, while the sum is 61.

The spelling of 76019156376721 in words is "seventy-six trillion, nineteen billion, one hundred fifty-six million, three hundred seventy-six thousand, seven hundred twenty-one".