61983010615681 has 8 divisors (see below), whose sum is σ = 62303254892640. Its totient is φ = 61663379248128.

The previous prime is 61983010615663. The next prime is 61983010615709. The reversal of 61983010615681 is 18651601038916.

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 61983010615681 - 2¹³ = 61983010607489 is a prime.

It is a super-2 number, since 2×61983010615681² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61983010613681) 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, 153024571 + ... + 153429088.

It is an arithmetic number, because the mean of its divisors is an integer number (7787906861580).

Almost surely, 2^{61983010615681} is an apocalyptic number.

It is an amenable number.

61983010615681 is a deficient number, since it is larger than the sum of its proper divisors (320244276959).

61983010615681 is a wasteful number, since it uses less digits than its factorization.

61983010615681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306454703.

The product of its (nonzero) digits is 1866240, while the sum is 55.

The spelling of 61983010615681 in words is "sixty-one trillion, nine hundred eighty-three billion, ten million, six hundred fifteen thousand, six hundred eighty-one".