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70012420985 = 5131763359657
BaseRepresentation
bin100000100110100010…
…0001100001101111001
320200201021201111021002
41001031010030031321
52121341134432420
652055133054345
75025654521303
oct1011504141571
9220637644232
1070012420985
1127768206151
121169b0273b5
1367a9ba6150
14356252a973
151c4b766075
hex104d10c379

70012420985 has 16 divisors (see below), whose sum is σ = 95799802896. Its totient is φ = 48660215808.

The previous prime is 70012420957. The next prime is 70012420999. The reversal of 70012420985 is 58902421007.

It can be written as a sum of positive squares in 8 ways, for example, as 3390616441 + 66621804544 = 58229^2 + 258112^2 .

It is a cyclic number.

It is not a de Polignac number, because 70012420985 - 28 = 70012420729 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31678724 + ... + 31680933.

It is an arithmetic number, because the mean of its divisors is an integer number (5987487681).

Almost surely, 270012420985 is an apocalyptic number.

It is an amenable number.

70012420985 is a deficient number, since it is larger than the sum of its proper divisors (25787381911).

70012420985 is a wasteful number, since it uses less digits than its factorization.

70012420985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63359692.

The product of its (nonzero) digits is 40320, while the sum is 38.

The spelling of 70012420985 in words is "seventy billion, twelve million, four hundred twenty thousand, nine hundred eighty-five".

Divisors: 1 5 13 17 65 85 221 1105 63359657 316798285 823675541 1077114169 4118377705 5385570845 14002484197 70012420985