661096796430 has 32 divisors (see below), whose sum is σ = 1813294070784. Its totient is φ = 151107839136.

The previous prime is 661096796417. The next prime is 661096796443. The reversal of 661096796430 is 34697690166.

It is an interprime number because it is at equal distance from previous prime (661096796417) and next prime (661096796443).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1574039782 + ... + 1574040201.

It is an arithmetic number, because the mean of its divisors is an integer number (56665439712).

Almost surely, 2^661096796430 is an apocalyptic number.

661096796430 is an abundant number, since it is smaller than the sum of its proper divisors (1152197274354).

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

661096796430 is a wasteful number, since it uses less digits than its factorization.

661096796430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3148080000.

The product of its (nonzero) digits is 8817984, while the sum is 57.

The spelling of 661096796430 in words is "six hundred sixty-one billion, ninety-six million, seven hundred ninety-six thousand, four hundred thirty".