61930051290 has 384 divisors, whose sum is σ = 179057848320. Its totient is φ = 14805504000.

The previous prime is 61930051283. The next prime is 61930051301. The reversal of 61930051290 is 9215003916.

61930051290 is a `hidden beast` number, since 6 + 19 + 300 + 51 + 290 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 410132715 + ... + 410132865.

It is an arithmetic number, because the mean of its divisors is an integer number (466296480).

Almost surely, 2^61930051290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61930051290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89528924160).

61930051290 is an abundant number, since it is smaller than the sum of its proper divisors (117127797030).

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

61930051290 is a wasteful number, since it uses less digits than its factorization.

61930051290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398 (or 395 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The spelling of 61930051290 in words is "sixty-one billion, nine hundred thirty million, fifty-one thousand, two hundred ninety".