70640390471900 has 36 divisors (see below), whose sum is σ = 153375620592432. Its totient is φ = 28240308581760.

The previous prime is 70640390471891. The next prime is 70640390471909. The reversal of 70640390471900 is 917409304607.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (70640390471891) and next prime (70640390471909).

It is a super-2 number, since 2×70640390471900² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70640390471909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 197915897 + ... + 198272496.

Almost surely, 2^{70640390471900} is an apocalyptic number.

It is an amenable number.

70640390471900 is an abundant number, since it is smaller than the sum of its proper divisors (82735230120532).

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

70640390471900 is a wasteful number, since it uses less digits than its factorization.

70640390471900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396190190 (or 396190183 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 50.

The spelling of 70640390471900 in words is "seventy trillion, six hundred forty billion, three hundred ninety million, four hundred seventy-one thousand, nine hundred".