61842251519 has 4 divisors (see below), whose sum is σ = 61842890496. Its totient is φ = 61841612544.

The previous prime is 61842251507. The next prime is 61842251543. The reversal of 61842251519 is 91515224816.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 61842251519 - 2²⁸ = 61573816063 is a prime.

It is a super-2 number, since 2×61842251519² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61842251519.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61842251579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141119 + ... + 378944.

It is an arithmetic number, because the mean of its divisors is an integer number (15460722624).

Almost surely, 2^61842251519 is an apocalyptic number.

61842251519 is a deficient number, since it is larger than the sum of its proper divisors (638977).

61842251519 is a wasteful number, since it uses less digits than its factorization.

61842251519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638976.

The product of its digits is 172800, while the sum is 44.

The spelling of 61842251519 in words is "sixty-one billion, eight hundred forty-two million, two hundred fifty-one thousand, five hundred nineteen".