655148913770 has 16 divisors (see below), whose sum is σ = 1269980971560. Its totient is φ = 241901137344.

The previous prime is 655148913767. The next prime is 655148913787. The reversal of 655148913770 is 77319841556.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 563164696249 + 91984217521 = 750443^2 + 303289^2 .

It is a super-2 number, since 2×655148913770² (a number of 24 digits) contains 22 as substring.

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, 2519803385 + ... + 2519803644.

Almost surely, 2^655148913770 is an apocalyptic number.

655148913770 is a deficient number, since it is larger than the sum of its proper divisors (614832057790).

655148913770 is a wasteful number, since it uses less digits than its factorization.

655148913770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5039607049.

The product of its (nonzero) digits is 6350400, while the sum is 56.

The spelling of 655148913770 in words is "six hundred fifty-five billion, one hundred forty-eight million, nine hundred thirteen thousand, seven hundred seventy".