161195976510 has 32 divisors (see below), whose sum is σ = 399350034432. Its totient is φ = 41598961440.

The previous prime is 161195976457. The next prime is 161195976511. The reversal of 161195976510 is 15679591161.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161195976511) 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, 86663574 + ... + 86665433.

It is an arithmetic number, because the mean of its divisors is an integer number (12479688576).

Almost surely, 2^161195976510 is an apocalyptic number.

161195976510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161195976510 is an abundant number, since it is smaller than the sum of its proper divisors (238154057922).

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

161195976510 is a wasteful number, since it uses less digits than its factorization.

161195976510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173329048.

The product of its (nonzero) digits is 510300, while the sum is 51.

The spelling of 161195976510 in words is "one hundred sixty-one billion, one hundred ninety-five million, nine hundred seventy-six thousand, five hundred ten".