961570765906 has 4 divisors (see below), whose sum is σ = 1442356148862. Its totient is φ = 480785382952.

The previous prime is 961570765889. The next prime is 961570765907. The reversal of 961570765906 is 609567075169.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 493316593225 + 468254172681 = 702365^2 + 684291^2 .

It is not an unprimeable number, because it can be changed into a prime (961570765907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240392691475 + ... + 240392691478.

Almost surely, 2^961570765906 is an apocalyptic number.

961570765906 is a deficient number, since it is larger than the sum of its proper divisors (480785382956).

961570765906 is a wasteful number, since it uses less digits than its factorization.

961570765906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480785382955.

The product of its (nonzero) digits is 21432600, while the sum is 61.

The spelling of 961570765906 in words is "nine hundred sixty-one billion, five hundred seventy million, seven hundred sixty-five thousand, nine hundred six".