61514969088 has 208 divisors, whose sum is σ = 173764529280. Its totient is φ = 19300810752.

The previous prime is 61514969077. The next prime is 61514969143. The reversal of 61514969088 is 88096941516.

It is a Harshad number since it is a multiple of its sum of digits (57).

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, 40389895 + ... + 40391417.

Almost surely, 2^61514969088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61514969088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86882264640).

61514969088 is an abundant number, since it is smaller than the sum of its proper divisors (112249560192).

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

61514969088 is a wasteful number, since it uses less digits than its factorization.

61514969088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1742 (or 1720 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 57.

The spelling of 61514969088 in words is "sixty-one billion, five hundred fourteen million, nine hundred sixty-nine thousand, eighty-eight".