76477804121 has 4 divisors (see below), whose sum is σ = 77619263952. Its totient is φ = 75336344292.

The previous prime is 76477804057. The next prime is 76477804129. The reversal of 76477804121 is 12140877467.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 76477804121 - 2⁶ = 76477804057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76477804129) 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, 570729815 + ... + 570729948.

It is an arithmetic number, because the mean of its divisors is an integer number (19404815988).

Almost surely, 2^76477804121 is an apocalyptic number.

It is an amenable number.

76477804121 is a deficient number, since it is larger than the sum of its proper divisors (1141459831).

76477804121 is a wasteful number, since it uses less digits than its factorization.

76477804121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141459830.

The product of its (nonzero) digits is 526848, while the sum is 47.

The spelling of 76477804121 in words is "seventy-six billion, four hundred seventy-seven million, eight hundred four thousand, one hundred twenty-one".