977219266261 has 16 divisors (see below), whose sum is σ = 1135818766336. Its totient is φ = 823420301616.

The previous prime is 977219266253. The next prime is 977219266271. The reversal of 977219266261 is 162662912779.

It is not a de Polignac number, because 977219266261 - 2³ = 977219266253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 977219266196 and 977219266205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977219266201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1910841 + ... + 2367646.

It is an arithmetic number, because the mean of its divisors is an integer number (70988672896).

Almost surely, 2^977219266261 is an apocalyptic number.

It is an amenable number.

977219266261 is a deficient number, since it is larger than the sum of its proper divisors (158599500075).

977219266261 is a wasteful number, since it uses less digits than its factorization.

977219266261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4279048.

The product of its digits is 6858432, while the sum is 58.

The spelling of 977219266261 in words is "nine hundred seventy-seven billion, two hundred nineteen million, two hundred sixty-six thousand, two hundred sixty-one".