77370773401 has 4 divisors (see below), whose sum is σ = 77671827252. Its totient is φ = 77069719552.

The previous prime is 77370773393. The next prime is 77370773477. The reversal of 77370773401 is 10437707377.

It is a happy number.

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 76868117001 + 502656400 = 277251^2 + 22420^2 .

It is a cyclic number.

It is not a de Polignac number, because 77370773401 - 2³ = 77370773393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77370173401) 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, 150526540 + ... + 150527053.

It is an arithmetic number, because the mean of its divisors is an integer number (19417956813).

Almost surely, 2^77370773401 is an apocalyptic number.

It is an amenable number.

77370773401 is a deficient number, since it is larger than the sum of its proper divisors (301053851).

77370773401 is a wasteful number, since it uses less digits than its factorization.

77370773401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301053850.

The product of its (nonzero) digits is 605052, while the sum is 46.

The spelling of 77370773401 in words is "seventy-seven billion, three hundred seventy million, seven hundred seventy-three thousand, four hundred one".