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61873459932 = 2235156121661
BaseRepresentation
bin111001100111111100…
…100001001011011100
312220201001211102122010
4321213330201023130
52003204101204212
644231350551220
74320165506004
oct714774411334
9186631742563
1061873459932
1124270a56259
12bba9368510
135ab092a86b
142dcd60d004
151921e6c03c
hexe67f212dc

61873459932 has 12 divisors (see below), whose sum is σ = 144371406536. Its totient is φ = 20624486640.

The previous prime is 61873459931. The next prime is 61873459943. The reversal of 61873459932 is 23995437816.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61873459931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2578060819 + ... + 2578060842.

Almost surely, 261873459932 is an apocalyptic number.

It is an amenable number.

61873459932 is an abundant number, since it is smaller than the sum of its proper divisors (82497946604).

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

61873459932 is a wasteful number, since it uses less digits than its factorization.

61873459932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5156121668 (or 5156121666 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 57.

The spelling of 61873459932 in words is "sixty-one billion, eight hundred seventy-three million, four hundred fifty-nine thousand, nine hundred thirty-two".

Divisors: 1 2 3 4 6 12 5156121661 10312243322 15468364983 20624486644 30936729966 61873459932