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87070996970 = 2571122635207
BaseRepresentation
bin101000100010111010…
…1011111100111101010
322022202010102221022122
41101011311133213222
52411310133400340
6103555545351242
76201462156056
oct1210565374752
9268663387278
1087070996970
1133a21342831
1214a5ba98522
1382980682a9
1442ddcd6c66
1523e915ddb5
hex1445d5f9ea

87070996970 has 16 divisors (see below), whose sum is σ = 158935229568. Its totient is φ = 34337857680.

The previous prime is 87070996949. The next prime is 87070996981. The reversal of 87070996970 is 7969907078.

It is a happy number.

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, 61316894 + ... + 61318313.

It is an arithmetic number, because the mean of its divisors is an integer number (9933451848).

Almost surely, 287070996970 is an apocalyptic number.

87070996970 is a deficient number, since it is larger than the sum of its proper divisors (71864232598).

87070996970 is a wasteful number, since it uses less digits than its factorization.

87070996970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122635285.

The product of its (nonzero) digits is 12002256, while the sum is 62.

The spelling of 87070996970 in words is "eighty-seven billion, seventy million, nine hundred ninety-six thousand, nine hundred seventy".

Divisors: 1 2 5 10 71 142 355 710 122635207 245270414 613176035 1226352070 8707099697 17414199394 43535498485 87070996970