76049971421 has 4 divisors (see below), whose sum is σ = 78105376092. Its totient is φ = 73994566752.

The previous prime is 76049971409. The next prime is 76049971433. The reversal of 76049971421 is 12417994067.

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

It is an interprime number because it is at equal distance from previous prime (76049971409) and next prime (76049971433).

It can be written as a sum of positive squares in 2 ways, for example, as 69571975225 + 6477996196 = 263765^2 + 80486^2 .

It is a cyclic number.

It is not a de Polignac number, because 76049971421 - 2⁶ = 76049971357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 76049971421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76049970421) 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, 1027702280 + ... + 1027702353.

It is an arithmetic number, because the mean of its divisors is an integer number (19526344023).

Almost surely, 2^76049971421 is an apocalyptic number.

It is an amenable number.

76049971421 is a deficient number, since it is larger than the sum of its proper divisors (2055404671).

76049971421 is a wasteful number, since it uses less digits than its factorization.

76049971421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055404670.

The product of its (nonzero) digits is 762048, while the sum is 50.

The spelling of 76049971421 in words is "seventy-six billion, forty-nine million, nine hundred seventy-one thousand, four hundred twenty-one".