771649452496 has 160 divisors (see below), whose sum is σ = 1688816158848. Its totient is φ = 339170457600.

The previous prime is 771649452493. The next prime is 771649452557. The reversal of 771649452496 is 694254946177.

771649452496 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×771649452496³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (771649452491) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 190481671 + ... + 190485721.

Almost surely, 2^771649452496 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 771649452496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (844408079424).

771649452496 is an abundant number, since it is smaller than the sum of its proper divisors (917166706352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

771649452496 is a wasteful number, since it uses less digits than its factorization.

771649452496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4629 (or 4623 counting only the distinct ones).

The product of its digits is 91445760, while the sum is 64.

The spelling of 771649452496 in words is "seven hundred seventy-one billion, six hundred forty-nine million, four hundred fifty-two thousand, four hundred ninety-six".