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70388568620 = 22513925319629
BaseRepresentation
bin100000110001101111…
…1000101001000101100
320201200111111202210222
41001203133011020230
52123123433143440
652200331150512
75041202650526
oct1014337051054
9221614452728
1070388568620
112794056a467
1211784ba5438
136839ab5a06
14359a482a16
151c6e7b72b5
hex10637c522c

70388568620 has 24 divisors (see below), whose sum is σ = 148879424400. Its totient is φ = 27952869312.

The previous prime is 70388568619. The next prime is 70388568683. The reversal of 70388568620 is 2686588307.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12657035 + ... + 12662594.

It is an arithmetic number, because the mean of its divisors is an integer number (6203309350).

Almost surely, 270388568620 is an apocalyptic number.

It is an amenable number.

70388568620 is an abundant number, since it is smaller than the sum of its proper divisors (78490855780).

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

70388568620 is a wasteful number, since it uses less digits than its factorization.

70388568620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25319777 (or 25319775 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 53.

The spelling of 70388568620 in words is "seventy billion, three hundred eighty-eight million, five hundred sixty-eight thousand, six hundred twenty".

Divisors: 1 2 4 5 10 20 139 278 556 695 1390 2780 25319629 50639258 101278516 126598145 253196290 506392580 3519428431 7038856862 14077713724 17597142155 35194284310 70388568620