70005121672 has 64 divisors (see below), whose sum is σ = 142067520000. Its totient is φ = 32230494720.

The previous prime is 70005121651. The next prime is 70005121673. The reversal of 70005121672 is 27612150007.

It is a super-3 number, since 3×70005121672³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (70005121673) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1655529 + ... + 1697287.

It is an arithmetic number, because the mean of its divisors is an integer number (2219805000).

Almost surely, 2^70005121672 is an apocalyptic number.

It is an amenable number.

70005121672 is an abundant number, since it is smaller than the sum of its proper divisors (72062398328).

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

70005121672 is a wasteful number, since it uses less digits than its factorization.

70005121672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42094 (or 42090 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 31.

Adding to 70005121672 its reverse (27612150007), we get a palindrome (97617271679).

The spelling of 70005121672 in words is "seventy billion, five million, one hundred twenty-one thousand, six hundred seventy-two".