61140030575 has 24 divisors (see below), whose sum is σ = 81658033968. Its totient is φ = 45142606080.

The previous prime is 61140030569. The next prime is 61140030617. The reversal of 61140030575 is 57503004116.

It is not a de Polignac number, because 61140030575 - 2²⁰ = 61138981999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3180944 + ... + 3200106.

It is an arithmetic number, because the mean of its divisors is an integer number (3402418082).

Almost surely, 2^61140030575 is an apocalyptic number.

61140030575 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

61140030575 is a deficient number, since it is larger than the sum of its proper divisors (20518003393).

61140030575 is a wasteful number, since it uses less digits than its factorization.

61140030575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29003 (or 28998 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 32.

The spelling of 61140030575 in words is "sixty-one billion, one hundred forty million, thirty thousand, five hundred seventy-five".