61751146540 has 24 divisors (see below), whose sum is σ = 130233972960. Its totient is φ = 24594446208.

The previous prime is 61751146537. The next prime is 61751146543. The reversal of 61751146540 is 4564115716.

It is an interprime number because it is at equal distance from previous prime (61751146537) and next prime (61751146543).

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 61751146493 and 61751146502.

It is not an unprimeable number, because it can be changed into a prime (61751146543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6621000 + ... + 6630319.

It is an arithmetic number, because the mean of its divisors is an integer number (5426415540).

Almost surely, 2^61751146540 is an apocalyptic number.

It is an amenable number.

61751146540 is an abundant number, since it is smaller than the sum of its proper divisors (68482826420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61751146540 is a wasteful number, since it uses less digits than its factorization.

61751146540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13251561 (or 13251559 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 61751146540 in words is "sixty-one billion, seven hundred fifty-one million, one hundred forty-six thousand, five hundred forty".