7955138755 has 16 divisors (see below), whose sum is σ = 9617002560. Its totient is φ = 6317039232.

The previous prime is 7955138743. The next prime is 7955138791. The reversal of 7955138755 is 5578315597.

It is a cyclic number.

It is not a de Polignac number, because 7955138755 - 2²⁷ = 7820921027 is a prime.

It is a super-2 number, since 2×7955138755² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7955138696 and 7955138705.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 423217 + ... + 441613.

It is an arithmetic number, because the mean of its divisors is an integer number (601062660).

Almost surely, 2^7955138755 is an apocalyptic number.

7955138755 is a deficient number, since it is larger than the sum of its proper divisors (1661863805).

7955138755 is a wasteful number, since it uses less digits than its factorization.

7955138755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19038.

The product of its digits is 6615000, while the sum is 55.

The square root of 7955138755 is about 89191.5845525798. The cubic root of 7955138755 is about 1996.2545531090.

The spelling of 7955138755 in words is "seven billion, nine hundred fifty-five million, one hundred thirty-eight thousand, seven hundred fifty-five".