61161428057270 has 128 divisors (see below), whose sum is σ = 120055933071360. Its totient is φ = 22348263191040.

The previous prime is 61161428057269. The next prime is 61161428057293. The reversal of 61161428057270 is 7275082416116.

It is a super-5 number, since 5×61161428057270⁵ (a number of 70 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2454003029 + ... + 2454027951.

It is an arithmetic number, because the mean of its divisors is an integer number (937936977120).

Almost surely, 2^{61161428057270} is an apocalyptic number.

61161428057270 is a deficient number, since it is larger than the sum of its proper divisors (58894505014090).

61161428057270 is a wasteful number, since it uses less digits than its factorization.

61161428057270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26470.

The product of its (nonzero) digits is 1128960, while the sum is 50.

The spelling of 61161428057270 in words is "sixty-one trillion, one hundred sixty-one billion, four hundred twenty-eight million, fifty-seven thousand, two hundred seventy".