70743989359890 has 672 divisors, whose sum is σ = 243768210835968. Its totient is φ = 14458988332800.

The previous prime is 70743989359819. The next prime is 70743989359913. The reversal of 70743989359890 is 9895398934707.

70743989359890 is a `hidden beast` number, since 7 + 0 + 7 + 4 + 398 + 93 + 59 + 8 + 90 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is an unprimeable number.

It is a polite number, since it can be written in 335 ways as a sum of consecutive naturals, for example, 376558519 + ... + 376746341.

It is an arithmetic number, because the mean of its divisors is an integer number (362750313744).

Almost surely, 2^{70743989359890} is an apocalyptic number.

70743989359890 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 70743989359890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121884105417984).

70743989359890 is an abundant number, since it is smaller than the sum of its proper divisors (173024221476078).

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

70743989359890 is a wasteful number, since it uses less digits than its factorization.

70743989359890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187938 (or 187912 counting only the distinct ones).

The product of its (nonzero) digits is 3703553280, while the sum is 81.

The spelling of 70743989359890 in words is "seventy trillion, seven hundred forty-three billion, nine hundred eighty-nine million, three hundred fifty-nine thousand, eight hundred ninety".