77422506001 has 9 divisors (see below), whose sum is σ = 78548365353. Its totient is φ = 76312570740.

The previous prime is 77422505989. The next prime is 77422506011. The reversal of 77422506001 is 10060522477.

The square root of 77422506001 is 278249.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 77422506001 - 2²⁵ = 77388951569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77422506011) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 19753720 + ... + 19757638.

Almost surely, 2^77422506001 is an apocalyptic number.

77422506001 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

77422506001 is the 278249-th square number.

77422506001 is the 139125-th centered octagonal number.

It is an amenable number.

77422506001 is a deficient number, since it is larger than the sum of its proper divisors (1125859352).

77422506001 is an frugal number, since it uses more digits than its factorization.

77422506001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7980 (or 3990 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The spelling of 77422506001 in words is "seventy-seven billion, four hundred twenty-two million, five hundred six thousand, one".