61299621913498 has 4 divisors (see below), whose sum is σ = 91949432870250. Its totient is φ = 30649810956748.

The previous prime is 61299621913489. The next prime is 61299621913561. The reversal of 61299621913498 is 89431912699216.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 52170963364809 + 9128658548689 = 7222947^2 + 3021367^2 .

It is a super-3 number, since 3×61299621913498³ (a number of 42 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15324905478373 + ... + 15324905478376.

Almost surely, 2^{61299621913498} is an apocalyptic number.

61299621913498 is a deficient number, since it is larger than the sum of its proper divisors (30649810956752).

61299621913498 is a wasteful number, since it uses less digits than its factorization.

61299621913498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30649810956751.

The product of its digits is 90699264, while the sum is 70.

The spelling of 61299621913498 in words is "sixty-one trillion, two hundred ninety-nine billion, six hundred twenty-one million, nine hundred thirteen thousand, four hundred ninety-eight".