991570095062 has 4 divisors (see below), whose sum is σ = 1487355142596. Its totient is φ = 495785047530.

The previous prime is 991570095053. The next prime is 991570095091. The reversal of 991570095062 is 260590075199.

It is a happy number.

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

It is a super-2 number, since 2×991570095062² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 991570094995 and 991570095013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247892523764 + ... + 247892523767.

It is an arithmetic number, because the mean of its divisors is an integer number (371838785649).

Almost surely, 2^991570095062 is an apocalyptic number.

991570095062 is a deficient number, since it is larger than the sum of its proper divisors (495785047534).

991570095062 is a wasteful number, since it uses less digits than its factorization.

991570095062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495785047533.

The product of its (nonzero) digits is 1530900, while the sum is 53.

The spelling of 991570095062 in words is "nine hundred ninety-one billion, five hundred seventy million, ninety-five thousand, sixty-two".