1655722621130 has 16 divisors (see below), whose sum is σ = 2980514871144. Its totient is φ = 662241458880.

The previous prime is 1655722621043. The next prime is 1655722621153. The reversal of 1655722621130 is 311262275561.

It can be written as a sum of positive squares in 4 ways, for example, as 1654204973281 + 1517647849 = 1286159^2 + 38957^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5802401 + ... + 6081060.

Almost surely, 2^{1655722621130} is an apocalyptic number.

1655722621130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1655722621130 is a deficient number, since it is larger than the sum of its proper divisors (1324792250014).

1655722621130 is a wasteful number, since it uses less digits than its factorization.

1655722621130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11897401.

The product of its (nonzero) digits is 151200, while the sum is 41.

Adding to 1655722621130 its reverse (311262275561), we get a palindrome (1966984896691).

The spelling of 1655722621130 in words is "one trillion, six hundred fifty-five billion, seven hundred twenty-two million, six hundred twenty-one thousand, one hundred thirty".