61898241254140 has 48 divisors (see below), whose sum is σ = 131888049721344. Its totient is φ = 24399482715200.

The previous prime is 61898241254107. The next prime is 61898241254153. The reversal of 61898241254140 is 4145214289816.

It is a happy number.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75309616 + ... + 76127095.

It is an arithmetic number, because the mean of its divisors is an integer number (2747667702528).

Almost surely, 2^{61898241254140} is an apocalyptic number.

It is an amenable number.

61898241254140 is an abundant number, since it is smaller than the sum of its proper divisors (69989808467204).

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

61898241254140 is a wasteful number, since it uses less digits than its factorization.

61898241254140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151437018 (or 151437016 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 55.

The spelling of 61898241254140 in words is "sixty-one trillion, eight hundred ninety-eight billion, two hundred forty-one million, two hundred fifty-four thousand, one hundred forty".