77021571332 has 12 divisors (see below), whose sum is σ = 135540755280. Its totient is φ = 38295641256.

The previous prime is 77021571329. The next prime is 77021571343. The reversal of 77021571332 is 23317512077.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53785298 + ... + 53786729.

It is an arithmetic number, because the mean of its divisors is an integer number (11295062940).

Almost surely, 2^77021571332 is an apocalyptic number.

It is an amenable number.

77021571332 is a deficient number, since it is larger than the sum of its proper divisors (58519183948).

77021571332 is a wasteful number, since it uses less digits than its factorization.

77021571332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107572210 (or 107572208 counting only the distinct ones).

The product of its (nonzero) digits is 61740, while the sum is 38.

The spelling of 77021571332 in words is "seventy-seven billion, twenty-one million, five hundred seventy-one thousand, three hundred thirty-two".