772554061481 has 4 divisors (see below), whose sum is σ = 772581683652. Its totient is φ = 772526439312.

The previous prime is 772554061453. The next prime is 772554061493. The reversal of 772554061481 is 184160455277.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 184160455277 = 61 ⋅3019023857.

It can be written as a sum of positive squares in 2 ways, for example, as 503702478400 + 268851583081 = 709720^2 + 518509^2 .

It is a cyclic number.

It is not a de Polignac number, because 772554061481 - 2⁶ = 772554061417 is a prime.

It is a super-2 number, since 2×772554061481² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (772554061441) 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, 13769090 + ... + 13825083.

It is an arithmetic number, because the mean of its divisors is an integer number (193145420913).

Almost surely, 2^772554061481 is an apocalyptic number.

It is an amenable number.

772554061481 is a deficient number, since it is larger than the sum of its proper divisors (27622171).

772554061481 is a wasteful number, since it uses less digits than its factorization.

772554061481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27622170.

The product of its (nonzero) digits is 1881600, while the sum is 50.

The spelling of 772554061481 in words is "seven hundred seventy-two billion, five hundred fifty-four million, sixty-one thousand, four hundred eighty-one".