1577216217152 has 14 divisors (see below), whose sum is σ = 3129788431038. Its totient is φ = 788608108544.

The previous prime is 1577216217139. The next prime is 1577216217211. The reversal of 1577216217152 is 2517126127751.

It can be written as a sum of positive squares in only one way, i.e., 1376060379136 + 201155838016 = 1173056^2 + 448504^2 .

It is a super-2 number, since 2×1577216217152² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1577216217097 and 1577216217106.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12322001633 + ... + 12322001760.

Almost surely, 2^{1577216217152} is an apocalyptic number.

It is an amenable number.

1577216217152 is a deficient number, since it is larger than the sum of its proper divisors (1552572213886).

1577216217152 is an equidigital number, since it uses as much as digits as its factorization.

1577216217152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24644003405 (or 24644003395 counting only the distinct ones).

The product of its digits is 411600, while the sum is 47.

The spelling of 1577216217152 in words is "one trillion, five hundred seventy-seven billion, two hundred sixteen million, two hundred seventeen thousand, one hundred fifty-two".