783260399961 has 96 divisors (see below), whose sum is σ = 1319109792000. Its totient is φ = 461110019328.

The previous prime is 783260399951. The next prime is 783260400029. The reversal of 783260399961 is 169993062387.

783260399961 is a `hidden beast` number, since 78 + 32 + 60 + 399 + 96 + 1 = 666.

It is not a de Polignac number, because 783260399961 - 2⁷ = 783260399833 is a prime.

It is a super-2 number, since 2×783260399961² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (783260399921) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9946380 + ... + 10024818.

It is an arithmetic number, because the mean of its divisors is an integer number (13740727000).

Almost surely, 2^783260399961 is an apocalyptic number.

It is an amenable number.

783260399961 is a deficient number, since it is larger than the sum of its proper divisors (535849392039).

783260399961 is a wasteful number, since it uses less digits than its factorization.

783260399961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78605 (or 78593 counting only the distinct ones).

The product of its (nonzero) digits is 26453952, while the sum is 63.

The spelling of 783260399961 in words is "seven hundred eighty-three billion, two hundred sixty million, three hundred ninety-nine thousand, nine hundred sixty-one".