77915270023 has 4 divisors (see below), whose sum is σ = 79235867880. Its totient is φ = 76594672168.

The previous prime is 77915270011. The next prime is 77915270047. The reversal of 77915270023 is 32007251977.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77915270023 is a prime.

It is a super-3 number, since 3×77915270023³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77915570023) 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, 660298840 + ... + 660298957.

It is an arithmetic number, because the mean of its divisors is an integer number (19808966970).

Almost surely, 2^77915270023 is an apocalyptic number.

77915270023 is a deficient number, since it is larger than the sum of its proper divisors (1320597857).

77915270023 is a wasteful number, since it uses less digits than its factorization.

77915270023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320597856.

The product of its (nonzero) digits is 185220, while the sum is 43.

The spelling of 77915270023 in words is "seventy-seven billion, nine hundred fifteen million, two hundred seventy thousand, twenty-three".