61299015581149 has 8 divisors (see below), whose sum is σ = 62632544980608. Its totient is φ = 59966706807840.

The previous prime is 61299015581129. The next prime is 61299015581213. The reversal of 61299015581149 is 94118551099216.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61299015581149 - 2⁷ = 61299015581021 is a prime.

It is a super-2 number, since 2×61299015581149² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61299015581129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305055007 + ... + 305255884.

It is an arithmetic number, because the mean of its divisors is an integer number (7829068122576).

Almost surely, 2^{61299015581149} is an apocalyptic number.

It is an amenable number.

61299015581149 is a deficient number, since it is larger than the sum of its proper divisors (1333529399459).

61299015581149 is a wasteful number, since it uses less digits than its factorization.

61299015581149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610313075.

The product of its (nonzero) digits is 6998400, while the sum is 61.

The spelling of 61299015581149 in words is "sixty-one trillion, two hundred ninety-nine billion, fifteen million, five hundred eighty-one thousand, one hundred forty-nine".